God stopped working at the end of six days of creation. On the seventh day, He rested. Adam was no more than a day old when God sat down from His work of creating. He showed Adam how to do it. The Sabbath day or Shabbat is the first thing God calls “holy” in scripture (Genesis 2:3). It is the only day of the week that He formally blessed.
Open the Feast Book and read historical proof that the early church honored the Sabbath. Learn how Sabbath observance was lost to Christian believers. Your questions about “biblical” versus “rabbinical” Sabbath prohibitions are answered here. Learn the Hebrew names for the days of the week, and realize that everyone can enjoy a day of rest! This chapter makes it easy with step-by-step instructions, special blessings, scripture readings, menu ideas, and a recipe for homemade challah bread.
Six days shall work be done, but on the seventh day is a Sabbath of solemn rest, a holy convocation. You shall do no work. It is a Sabbath to the LORD in all your dwelling places. —Leviticus 23:3 [ESV]